SOLUTION: What is the value of the expression {{{5x^2y / 5x - y}}} when x = 4 and y = 2? a)60/3 b) 8/1 c) 80/9 d) 16/5

Algebra ->  Rational-functions -> SOLUTION: What is the value of the expression {{{5x^2y / 5x - y}}} when x = 4 and y = 2? a)60/3 b) 8/1 c) 80/9 d) 16/5       Log On


   

Question 317795: What is the value of the expression 5x%5E2y+%2F+5x+-+y when x = 4 and y = 2?
a)60/3
b) 8/1
c) 80/9
d) 16/5

Answer by itiffydn(3) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute the values of x and y into your expression
Remember, the power of 2 belongs to the x, and not 5x
5x%5E2y+%2F+5x+-+y
= 5%284%5E2%29%282%29%2F%285%284%29-2%29
= 5%2816%29%282%29%2F%2820-2%29
= 160%2F18
= 80%2F9